Global Patent Index - EP 1628122 A1

EP 1628122 A1 20060222 - Focus processing with the distance of different target wheels

Title (en)

Focus processing with the distance of different target wheels

Title (de)

Scharfstellverfahren mit verschiedenen Zielradvorrichtungsdistanzen

Title (fr)

Procédé de mise au point avec les distances de différent dispositifs de roue-cible

Publication

EP 1628122 A1 20060222 (EN)

Application

EP 04368058 A 20040817

Priority

EP 04368058 A 20040817

Abstract (en)

An apparatus and method for automatically focusing a miniature digital camera module (MUT) is described. A MUT is loaded onto a test fixture and aligned with an optics system of a test handler. Focus targets contained within two target wheels are positioned over an optical centerline above the digital camera module using stepper motors. A field lens is positioned to focus an image of the targets onto the lens opening of the MUT. The image can be of a single target or a combination of targets contained on the target wheels at various optical distances from the MUT. A focusing unit adjusts the lens cap of the MUT for a best focus setting and after the MUT has been tested the best focus setting if physically fixed by permanently connecting the lens cap to the body of the MUT.

IPC 8 full level

G01M 11/02 (2006.01); H04N 17/00 (2006.01)

CPC (source: EP US)

H04N 17/002 (2013.01 - EP US); H04N 23/57 (2023.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1628122 A1 20060222; US 2006038976 A1 20060223; US 7248347 B2 20070724

DOCDB simple family (application)

EP 04368058 A 20040817; US 92930004 A 20040830